Finding the Third Proportional to 297,810 and 649,144

Step by Step Solution

1. Step 1: Write the proportion equation
   297,810 : 649,144 = 649,144 : x
2. Step 2: Convert to fraction form
   297,810/649,144 = 649,144/x
3. Step 3: Cross multiply
   297,810x = 649,144 × 649,144
4. Step 4: Simplify right side
   297,810x = 421,387,932,736
5. Step 5: Solve for x
   x = 421,387,932,736/297,810
6. Step 6: Final answer
   x = 1,414,955.62